78274193 has 4 divisors (see below), whose sum is σ = 78328320. Its totient is φ = 78220068.

The previous prime is 78274181. The next prime is 78274201. The reversal of 78274193 is 39147287.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78274193 - 2¹² = 78270097 is a prime.

It is a super-2 number, since 2×78274193² = 12253698579602498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78274193.

It is not an unprimeable number, because it can be changed into a prime (78274123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24833 + ... + 27806.

It is an arithmetic number, because the mean of its divisors is an integer number (19582080).

Almost surely, 2^78274193 is an apocalyptic number.

It is an amenable number.

78274193 is a deficient number, since it is larger than the sum of its proper divisors (54127).

78274193 is a wasteful number, since it uses less digits than its factorization.

78274193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54126.

The product of its digits is 84672, while the sum is 41.

The square root of 78274193 is about 8847.2703700068. The cubic root of 78274193 is about 427.7659378344.

The spelling of 78274193 in words is "seventy-eight million, two hundred seventy-four thousand, one hundred ninety-three".